valid-palindrome

Author: Shikha-code36

Strings/isvalidPalindrome.py

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+"Leetcode - https://leetcode.com/problems/valid-palindrome/"
+'''
+A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forward and backward. Alphanumeric characters include letters and numbers.
+
+Given a string s, return true if it is a palindrome, or false otherwise.
+
+Example 1:
+
+Input: s = "A man, a plan, a canal: Panama"
+Output: true
+Explanation: "amanaplanacanalpanama" is a palindrome.
+'''
+
+
+def isPalindrome(self, s):
+    filtered_char = filter(lambda c: c.isalnum(), s)
+    low_filterchar = map(lambda c: c.lower(), filtered_char)
+    filt = list(low_filterchar)
+    if filt == filt[::-1]:
+        return True
+    else:
+        return False